Western Sydney midfielder Roly Bonevacia claims to have been the target of racist abuse by Adelaide United fans during the Boxing Day A-League clash at Coopers Stadium.
After Wednesday's 2-2 A-League draw, the Dutchman tweeted he had heard the slurs during his 86-minute stint on the field.
Football Federation Australia said it was working closely with both clubs and Adelaide Venue Management to determine what occurred.
"Football Federation Australia (FFA) has been made aware of an incident involving a spectator at Coopers Stadium and Western Sydney Wanderers FC footballer, Roly Bonevacia, on Wednesday evening," FFA said in a statement.
"FFA condemns any form of racist or non-inclusive remarks and will not tolerate it at any time."
The Wanderers confirmed they had spoken to Bonevacia in regards to "alleged racial slurs made to him in Dutch."
They said Adelaide and FFA were assisting to investigate the source of the abuse.
"Western Sydney Wanderers have spoken to Roly Bonevacia in regards to alleged racial slurs made to him in Dutch during the second half of the match against Adelaide United," the Wanderers said in a statement.
"The club can confirm that discussions have taken place with Football Federation Australia and the Adelaide United Football Club regarding this behaviour.
"Investigations regarding the source of the abuse have commenced."
Last month a Wanderers fan was ejected from a game for directing a racist comment towards Brisbane goalkeeper Jamie Young, who is of Sri Lankan and Scottish descent.